Light transmission module
US5479288A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1993 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Mar 8, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/0775
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A light transmission module is disclosed, having a light receiving element module, in which a photodiode and a coupling portion between the photodiode and a first optical fiber are hermetically sealed, and a light emitting element module, in which a laser diode driven by an electric signal and a coupling portion between said laser diode and a second optical fiber are also hermetically sealed. A two-sided print board is provided, on the two sides of which electric circuits for a transmitting system and a receiving system are mounted. The electric circuits for the transmitting and receiving circuits are; isolated electrically from each other, and are sealed in one body by molds, and accommodated in cases, together with the light receiving element module and the light emitting element module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.